In the Toki no Tobira wo Koete series, also called the "Beyond the Threshold" series:

1) Ano Ogawa no Hotori den (There and Now):Seeking refuge from the pain in her life, Elisabeth McCartney returns to her centuries-old family home, where she suddenly is whisked back in time to the Victorian era and into the arms of the handsome Jonathan Fortner.2) Totteoki no Hohoemi wo (Here and Then):When her cousin disappeared without a trace, Rue Claridge volunteered to find her. But by retracing Elisabeth's steps, Rue never dreamed she'd wind up in 1892. And she certainly wasn't prepared for Marshal Farley Haynes. He arrested her and threw her in jail. But discovering how dangerous the Old West really was, Rue needed his help. Especially when, at any moment, fate can intercede and destiny can be changed by a single bullet.